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CVSS 7.8 · HIGH

CVE-2018-25302

Allok AVI to DVD SVCD VCD Converter 4.0.1217 contains a structured exception handling (SEH) based buffer overflow vulnerability that allows local attackers to execute arbitrary code by supplying a malicious string in the License Name field. Attackers can craft a payload with junk data, NSEH bypass, SEH handler address, and shellcode that triggers the overflow when pasted into the License Name field and the Register button is clicked, resulting in code execution.

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Analysis

This is a buffer overflow in a legacy, obscure video conversion utility from 2018. The attack vector requires a user to manually paste a malicious string into a license registration field, which is highly impractical and unlikely to affect modern developer workflows or infrastructure.

Severity

Score: 7.8(HIGH)
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
AV: LOCAL
AC: LOW
PR: NONE
UI: REQUIRED
S: UNCHANGED
C: HIGH
I: HIGH
A: HIGH
Weakness (CWE): CWE-120

EPSS

Probability of exploitation (next 30 days): 0.0001 (0.0%)
Percentile: 2.8%
EPSS: 2026-05-06

Technical description

Allok AVI to DVD SVCD VCD Converter 4.0.1217 contains a structured exception handling (SEH) based buffer overflow vulnerability that allows local attackers to execute arbitrary code by supplying a malicious string in the License Name field. Attackers can craft a payload with junk data, NSEH bypass, SEH handler address, and shellcode that triggers the overflow when pasted into the License Name field and the Register button is clicked, resulting in code execution.

Published: 4/29/2026, 8:16:25 PM
Last modified: 4/29/2026, 9:22:20 PM

References

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